From the Richmond Enquirer, 8/12/1862

CASTLE THUNDER. - Assistant Provost Marshal for the Eastern
District, will remove his quarters tomorrow, to Greanor's Tobacco Factory, on
Cary, near 18th Street. "Castle Godwin" immediately subside
into oblivion. The new prison, we learn, is to be christened "Castle
Thunder," a name indicative of Olympian vengeance upon offenders against
her laws, and one which, in point of sound, is as good as any other that could
be chosen, Castle Grizzly not excepted.